809317

Bosch Compress 3400i AWS Handleiding

16
Verklein
Vergroot
Pagina terug
1/44
Pagina verder
6721852066 (2023/01) GB/IE
Installation manual
Indoor Unit for Air to Water Heat Pump
Compress 3400i AWS
CS3400iAWS 10 E
Table of contents
Compress 3400i AWS – 6721852066 (2023/01)
2
Table of contents
1 Explanation of symbols and safety instructions . . . . . . . . . . . 3
1.1 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . . 3
1.2 General safety instructions . . . . . . . . . . . . . . . . . . . . . . . 3
1.2.1 Refrigerant . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2 Regulations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
2.1 Water quality . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Product description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.1 Supplied parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
3.2 Information on the indoor unit. . . . . . . . . . . . . . . . . . . . . 7
3.3 Declaration of Conformity . . . . . . . . . . . . . . . . . . . . . . . . 7
3.4 Type plate . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.5 Functional principle . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.6 Product overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7
3.7 Product dimensions and minimum clearances. . . . . . . . 8
3.8 Connection dimensions. . . . . . . . . . . . . . . . . . . . . . . . . . 8
4 Preparing for installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8
4.1 Considerations for assembling the indoor unit . . . . . . . 9
4.2 Heating system minimum volume and flow . . . . . . . . . . 9
5 Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
5.1 Transport and storage . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.2 Insulation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.3 Checklist. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 10
5.4 Removing the front cover of the indoor unit . . . . . . . . . 10
5.5 Assembling the drip tray . . . . . . . . . . . . . . . . . . . . . . . . 11
5.6 Connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.6.1 Connecting the indoor unit with integrated electric
booster heater . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12
5.6.2 Filling the outdoor unit, indoor unit and heating
system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
5.6.3 Primary circulation pump (PC0) . . . . . . . . . . . . . . . . . . 13
5.6.4 Heating circuit pump (PC1). . . . . . . . . . . . . . . . . . . . . . 13
5.7 Electrical connection . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
5.7.1 Connecting the indoor unit . . . . . . . . . . . . . . . . . . . . . . 14
5.7.2 Connections to installer module of the indoor unit . . . . 15
5.7.3 CAN-BUS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.7.4 EMS BUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
5.7.5 Fitting temperature sensors . . . . . . . . . . . . . . . . . . . . . 17
5.7.6 External connections . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
5.7.7 Terminals for electrical connections . . . . . . . . . . . . . . . 18
6 Commissioning. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
6.1 Commissioning checklist. . . . . . . . . . . . . . . . . . . . . . . . 18
6.2 Venting the indoor unit. . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.3 Adjusting the operating pressure of the heating
system. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
6.4 Pressure switch and overheating protection . . . . . . . . 20
6.5 Function test. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
6.5.1 Operating temperatures . . . . . . . . . . . . . . . . . . . . . . . . 20
7 Operation without the outdoor unit (individual
operation) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20
8 Maintenance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.1 Particle filter. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
8.2 Replacing components . . . . . . . . . . . . . . . . . . . . . . . . . 21
9 Installation of accessories . . . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9.1 CAN-BUS accessories . . . . . . . . . . . . . . . . . . . . . . . . . . 22
9.2 EMS-BUS for accessories . . . . . . . . . . . . . . . . . . . . . . . 22
9.3 External inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
9.4 Installation of the domestic hot water cylinder . . . . . . 23
9.5 DHW cylinder temperature sensor TW1. . . . . . . . . . . . 24
9.6 Diverter valve VW1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
9.7 DHW circulation pump PW2 (accessory). . . . . . . . . . . 25
9.8 Several heating circuits (with heating circuit
module) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25
9.9 Installation with swimming pool . . . . . . . . . . . . . . . . . . 25
9.10 Connect-Key K 30 RF. . . . . . . . . . . . . . . . . . . . . . . . . . . 26
10 Environmental protection and disposal . . . . . . . . . . . . . . . . . 26
11 Technical information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
11.1 Specifications - Indoor unit with integrated
electric booster heater . . . . . . . . . . . . . . . . . . . . . . . . . 26
11.2 Primary circulation pump diagram (PC0) . . . . . . . . . . 27
11.3 System solutions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
11.3.1 Explanations of the system solutions . . . . . . . . . . . . . . 28
11.3.2 Bypass of the heating system . . . . . . . . . . . . . . . . . . . . 29
11.3.3 System with integrated booster heater, DHW and
heating circuit without bypass and mixing valve . . . . . 30
11.3.4 System with integrated booster heater, DHW and
heating circuit with or without mixing valve and
with bypass . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 31
11.3.5 System with integrated booster heater, buffer,
DHW and heating circuit with or without mixing
valve . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32
11.3.6 Explanation of symbols . . . . . . . . . . . . . . . . . . . . . . . . . 33
11.4 Wiring diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
11.4.1 Installer module of indoor unit with integrated
electric booster heater . . . . . . . . . . . . . . . . . . . . . . . . . 34
11.4.2 CAN & EMS BUS. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
11.4.3 Wiring diagram for 5.85kW 230V~ electric
booster heater, CS3400iAWS 4-10 OR-S 230V~ . . . . 36
11.4.4 Wiring diagram for 5.85kW 3N ~ electric booster
heater, CS3400iAWS 4-10 OR-S 230V~. . . . . . . . . . . 36
11.4.5 400V 3N~ indoor unit with 230V~ outdoor unit . . . . . 37
11.4.6 Connection alternative for EMS bus . . . . . . . . . . . . . . . 38
11.4.7 EVU/SG wiring diagram for the indoor unit with an
integrated electric booster heater . . . . . . . . . . . . . . . . 38
11.4.8 Photovoltaic . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
11.5 Cable scheme. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
11.6 Measurements from temperature sensors . . . . . . . . . . 39
12 System Commissioning Report . . . . . . . . . . . . . . . . . . . . . . . . 40
13 Maintenance protocol, refrigerant (log book) . . . . . . . . . . . 41
Explanation of symbols and safety instructions
3
Compress 3400i AWS – 6721852066 (2023/01)
1 Explanation of symbols and safety instructions
1.1 Explanation of symbols
Warnings
In warnings, signal words at the beginning of a warning are used to
indicate the type and seriousness of the ensuing risk if measures for
minimizing danger are not taken.
The following signal words are defined and can be used in this document:
DANGER
DANGER indicates that severe or life-threatening personal injury will
occur.
WARNING
WARNING indicates that severe to life-threatening personal injury may
occur.
CAUTION
CAUTION indicates that minor to medium personal injury may occur.
NOTICE
NOTICE indicates that material damage may occur.
Important information
The info symbol indicates important information where there is no risk to
people or property.
Additional symbols
Table 1
Table 2
1.2 General safety instructions
HNotices for the target group
These installation instructions are intended for plumbing, heating and
electrical contractors. All instructions must be observed. Failure to
comply with instructions may result in material damage and personal
injury, including danger to life.
▶ Read the installation, service and commissioning instructions (heat
source, heating controller, pumps, etc.) before installation. Non-
compliance with safety instructions may result in electric shock,
water leakage, fire or other dangerous situations.
▶ The appliance must be installed, maintained, repaired and removed
in accordance with the installation manual by a qualified installer or
service technician.
A qualified installer or qualified service technician is a person who
has the qualifications and knowledge described in the installation
manual.
▶ This unit is part of a system that contains fluorinated gases as
refrigerant. For specific information on the type of gas and its
amount, please refer to the relevant label on the outdoor unit.
▶ Only qualified personnel can handle, fill, purge and dispose of the
refrigerant.
▶ Observe the safety instructions and warnings.
▶ Follow national and regional regulations, technical regulations and
guidelines.
▶ Record all work carried out.
HIntended use
This product is intended for use in sealed heating systems in residential
buildings.
Any other use is considered as not intended. Liability will not be assumed
for any resulting damage.
HInstallation, commissioning and service
The product may only be installed, brought into operation and
maintained by trained personnel.
▶ Use only original spare parts.
HRisk of burn from hot surfaces
Exterior pipework of the appliance can reach temperatures above 60 °C,
these should not be touched while the appliance is in operation. Suitable
insulation on the pipework must be installed.
HElectrical work
Electrical work must only be carried out by electrical installation
contractors.
Before starting electrical work:
▶ Isolate all poles of the mains voltage and secure against
reconnection.
▶ Make sure the mains voltage is disconnected.
▶ Before touching live parts: Wait at least 5 minutes to discharge the
capacitors.
▶ Observe the wiring diagrams of other system components as well.
HWhat to do if refrigerant leaks
If refrigerant leaks and touches the skin, it can cause frostbite.
▶ In case of a refrigerant leak, never touch any components of the air to
water system.
▶ Avoid skin or eye contact with refrigerant.
▶ Seek medical attention if you get refrigerant on your skin or in your
eyes.
Symbol Meaning
▶ a step in an action sequence
a reference to a related part in the document
• a list entry
–a list entry (second level)
Symbol Meaning
Warning low burning velocity material. This appliance
uses a flammable refrigerant with low burning velocity
(A2L). If refrigerant leaks and is exposed to an external
ignition source, there is a risk of fire.
Warning strong magnetic field.
Maintenance by a qualified person should be carried
out while following the instructions of the service
manual.
For operation, follow the instructions of the user
manual.
Regulations
Compress 3400i AWS – 6721852066 (2023/01)
4
HHandover to the user
When handing over, instruct the user how to operate the heating system
and inform the user about its operating conditions.
▶ Explain how to operate the heating system and draw the user's
attention to any safety relevant action.
▶ In particular, point out the following:
– Modifications and repairs must only be carried out by an approved
contractor.
– Safe and environmentally compatible operation requires
inspection at least once a year and proper cleaning and
maintenance.
▶ Point out the possible consequences (personal injury, including
danger to life or material damage) of non-existent or improper
inspection, cleaning and maintenance.
▶ Leave the installation instructions and the operating instructions with
the user for safekeeping.
1.2.1 Refrigerant
HRefrigerant R32
▶ This appliance is filled with refrigerant R32. If refrigerant gas gets
into contact with fire, it may generate a toxic gas or fire.
▶ Do not let any other substance than the specified refrigerant enter
the refrigerant circuit.
▶ Ensure that the refrigerant pipe is connected before running the
compressor.
▶ Be aware that refrigerant may not contain any odour.
▶ Read all safety instructions for handling flammable refrigerants
provided with this appliance in a separate document.
HInstallation, commissioning and service
▶ Do not smoke and make sure that any other possible ignition sources
are kept way from the working area. Ensure that the installation area
is adequately ventilated.
▶ Do not pierce or burn.
▶ This appliance must be stored in a room without continuously
operating ignition sources (e.g. open flames, operating gas or
operating electric heater).
▶ Prior and during installation, make sure that there are no refrigerant
leaks using an appropriate refrigerant detector that is adequately
sealed and intrinsically safe (i.e. no sparking). Never use potential
sources of ignition to search for refrigerant leaks. A halide torch (or
any other detector using a naked flame) may not be used. If a
refrigerant leak is detected, ventilate the room immediately.
▶ When performing any hot work, a dry powder or CO2 fire extinguisher
should be kept ready.
▶ Wear protective gloves during installation.
▶ Do not use means to accelerate the defrosting process or to clean the
appliance, other than those recommended by the manufacturer.
HMaintenance
▶ When changing electrical components assure that these correspond
with the correct specification. Maintenance and service guidelines
must always be followed.
▶ Before any repair and maintenance procedure, an initial safety check
and component inspection procedures should be performed to
check that:
– Capacitors are discharged.
– All electrical components are switched off and wiring is not
exposed.
– Earth bonding continuity is ensured.
▶ Do not connect any electrical supply to the circuit if a fault that can
compromise safety is detected.
2Regulations
This is an original manual. This manual may not be translated without the
approval of the manufacturer.
Follow the directives and regulations given below:
• Local provisions and regulations of the electricity supplier and
corresponding special rules
• National building regulations
•F-Gas regulation
•EN 50160 (Voltage characteristics of electricity supplied by public
electricity networks)
•EN 12828 (Heating systems in buildings - Design for water-based
heating systems)
•EN 1717 (Protection against pollution of potable water installations
and general requirements of devices to prevent pollution by
backflow)
•EN 378 (Refrigerating systems and heat pumps - Safety and
environmental requirements)
2.1 Water quality
Water quality in the heating system
Heat pumps operate at lower temperatures than other heating systems
which means that the thermal de-airing is not as effective and oxygen
levels are never as low as with a system incorporating an electric/oil/ gas
boiler. This means that the heating system will be more susceptible to
corrosion when exposed to aggressive water.
Preventive actions are required if the heating system require recurrent
filling or where a heating water sample don’t show clear water.
Preventive actions can be to supplement the heating system with a
magnetite filter and a de-airing valve.
Actions when the heating system requires recurrent filling:
▶ Check that the volume of the expansion vessel is sufficient to the
heating system volume.
▶ Replace the expansion vessel.
▶ Check the heating system for leaks.
A system separation with the help of a heat exchanger may be required if
the limits in table 3 can not be achieved.
Do not use any water additives except for a non-toxic pH-enhancer
and keep the water clean.
The limits stated in table 3 are required to ensure the output data and
operation of the heat pump throughout its entire service life.
Table 3 Water quality
Additional water treatment to prevent lime-scale deposits
A poor quality of the heating water promotes the formation of sludge and
lime-scale. This can lead to malfunctions and damage of the heat
exchanger in the heat pump. According to the current guideline VDI
2035 “Prevention of damage in water heating installations” and
depending on the degree of hardness of the filling water, the system
volume and the total output of the system, water treatment may be
required to avoid damage due to the formation of lime-scale.
Water quality
Hardness <3 °dH
Oxygen content <1 mg/l
Carbon dioxide, CO2<1 mg/l
Chloride ions, CL-<250 mg/l
Sulphate, SO4<100 mg/l
Conductivity <350 μS/cm
pH 7,5 – 9
Regulations
5
Compress 3400i AWS – 6721852066 (2023/01)
If the limits for water hardness stated in table 3 are exceeded, the
performance of the heat pump will deteriorate over time. If this
performance degradation can be accepted, the limits in figure 1 are
required to ensure the operation of the heat pump throughout its entire
service life.
Table 4 Table for heat pumps
Fig. 1 Limits for water treatment in heat pump systems
A Use completely de-mineralized fill water above the curve,
conductivity ≤ 10 microsiemens /cm.
B Use untreated tap water below the curve. Fill according to the
drinking water regulation.
HwWater hardness.
V Total water volume: fill volume of the heating system and top-up
volume over the service life of the heat pump.
If the total water volume is above the limit curve in the diagram (Fig. 1)
suitable measures are required for water treatment.
Suitable measures are:
• Use of fully de-mineralized fill water with a conductivity of ≤ 10
microsiemens / cm.
To prevent oxygen from entering the heating water, the expansion vessel
must be adequately dimensioned.
When installing diffusion open pipes, a system separation with the help
of a heat exchanger is required.
Heat pump
output [kW]
Total alkalinity
/ total hardness
of the filling
water [°dh]
Maximum fill and top-up water
volume Vmax [m3]
Q < 50 Requirements
according to
figure 1
Requirements according to
figure 1
0,00
0,20
0,40
0,60
0,80
1,00
1,20
1,40
1,60
1,80
2,00
2,20
2,40
2,60
0 5 10 15
0010036248-002
V [m
3
]
H
W
[°dH]
A
B
Product description
Compress 3400i AWS – 6721852066 (2023/01)
6
3 Product description
3.1 Supplied parts
Fig. 2 Supplied parts
[1] Indoor unit
[2] Documentation
[3] Drill template
[4] Magnetic particle filter with strainer
[5] Jumpers for 1-phase installation
[6] Mounting rail
[7] DHW (domestic hot water) temperature sensor
[8] Bag with connectors for the installation module
[9] Outdoor temperature sensor
[10] Screws (x2) and dowels (x2) for mounting bracket
[11] Screws for drip tray (x4)
[12] Copper pipe
[13] Heating circuit flow temperature sensor
[14] Drip tray
1
2
3
4
5
6
7
001004821-001
8
9
14
11
13
10
12
Product description
7
Compress 3400i AWS – 6721852066 (2023/01)
3.2 Information on the indoor unit
The AWS E indoor units are intended for installation inside the building
and for connection to the outdoor unit.
Possible combinations of indoor unit with different outdoor units:
Table 5 Possible combinations
AWS E is equipped with an integrated electric booster heater.
3.3 Declaration of Conformity
The design and operating characteristics of this product comply with the
British, European and supplementary national requirements.
The UKCA and CE markings declare that the product
complies with all the applicable British and
European legislation, which is stipulated by
attaching these markings.
You can request the complete text of the Declaration of Conformity from
the UK address indicated in this document.
3.4 Type plate
The type plate of the indoor unit is on the side of the appliance. It
contains information on the part number and serial number as well as the
date of manufacture of the device.
3.5 Functional principle
The function is based on the demand-actuated control of the compressor
output and, if needed, by switching on the integrated electric booster
heater via the indoor unit. The control unit controls the outdoor unit
depending on the set heating curve.
If the outdoor unit is unable to satisfy the heat energy demand of the
house, the indoor unit automatically starts the integrated electric
booster heater which produces the desired temperature in the house
together with the outdoor unit.
The DHW heating is controlled via the TW1 sensor in the DHW cylinder.
During the heat-up phase of the DHW cylinder, the heating mode of the
heating system is temporarily switched off via a 3-way valve. Once the
DHW cylinder is heated up, heating mode is resumed by the outdoor
unit.
Heating and DHW mode when the outdoor unit is deactivated
When the outdoor temperature is below –20 °C (approximately) or
exceeds 45 °C (approximately), the outdoor unit is automatically turned
off and is unable to produce any heat. In this case, the integrated electric
booster heater of the indoor unit adopts the heating and DHW mode.
3.6 Product overview
Fig. 3 Components and pipework connections of the indoor unit with
electric booster heater (views with drip tray)
[1] Automatic air vent valve (VL1)
[2] Electric booster heater
[3] Pressure gauge
[4] Installer module
[5] Reset of the overheating protection
[6] Primary circulation pump (PC0)
[7] Flow to the heating system
[8] Drain of the pressure relief valve and condensates
[9] Return from the heating system
[10] Cable feed for power supply
[11] Cable feed for sensor, CAN-BUS and EMS BUS
[12] Refrigerant out to outdoor unit (liquid)
[13] Refrigerant in from outdoor unit (gas)
AWS E CS3400iAWS
CS3400iAWS 10 E CS3400iAWS 4 OR-S1)
1) A 5/8” to 1/2” adapter is provided with CS3400iAWS 4 OR-S
CS3400iAWS 10 E CS3400iAWS 6 OR-S
CS3400iAWS 10 E CS3400iAWS 8 OR-S
CS3400iAWS 10 E CS3400iAWS 10 OR-S
4
5
6
1
2
3
7
13 12
11
8910
001004822-001
Preparing for installation
Compress 3400i AWS – 6721852066 (2023/01)
8
3.7 Product dimensions and minimum clearances
Mount the indoor unit high enough so that the control unit is easy to use.
In addition, take into account pipes and connections under the indoor
unit.
Fig. 4 Minimum distance (mm)
[A] It is recommended to ensure a minimum volume of 1 m³ underneath
the indoor unit. If this is not possible, ensure that the room is not
air-tight by allowing an air vent passage at a height lower than the
bottom of the indoor unit.
Fig. 5 Dimensions and connections (view without drip tray)
3.8 Connection dimensions
Table 6 Pipe dimensions for CS3400iAWS 10 E
4Preparing for installation
CAUTION
Risk of fire or explosion!
All possible ignition sources must be kept away from the installation site
as it may lead to fire or explosion.
▶ This appliance must be stored in a room without continuously
operating ignition sources (e.g. open flames, cigarette smoking, an
operating gas or operating electric heater).
NOTICE
Risk of damaging the product!
The indoor unit must not be installed in areas where it is exposed to water
splashes.
▶ Do not install the indoor unit in bathrooms or exterior areas.
WARNING
Strong magnet
Can be harmful to pacemaker wearers.
▶ Do not clean the filter or check the magnetite indicator if you are
pacemaker wearer.
The drain pipe of the pressure relief valve in the indoor unit must be
installed so that it is protected against frost and the drain pipe must be
routed to the drain.
▶ Run the connector pipes for the heating system and cold/domestic
hot water in the building up to the installation location of the indoor
unit.
50 50
800
550
0010035680-001
A
Pipe Connections
Heating system flow 1” male thread
Heating system return 1” female thread
Drain/discharge ø 22
Refrigerant pipe to/from outdoor
unit
1/4” - 5/8”1)
1) A 5/8” to 1/2” adapter is provided for connection with CS3400iAWS 4 OR-S
Installation
9
Compress 3400i AWS – 6721852066 (2023/01)
4.1 Considerations for assembling the indoor unit
• Mount the indoor unit at a suitable location within the house. Use a
spirit level to ensure that the appliance is in the correct position.
• Make sure that there are no operating ignition sources in the room
where the indoor unit is installed.
• Pipe work between the outdoor and indoor units must be as short as
possible. Use insulated pipes.
• Check that all pipe connections are intact and have not come loose
during transportation.
• Ensure all pipes and connections are protected against physical
damage. Mechanical connections to the indoor unit must be
accessible for maintenance purposes.
• Follow the instructions of the outdoor unit installation manual.
• Water discharged from the pressure relief valve should be routed
away from the indoor unit to visibly terminate in a frost-free outlet.
• The installation location of the indoor unit must have a drain.
• The low voltage cables must be routed with a minimum clearance of
100 mm from live 230V cables.
4.2 Heating system minimum volume and flow
A sufficient amount of energy stored in the system is required to avoid
multiple start/stop cycles, incomplete defrosting or unnecessary
alarms. Energy is stored in the heating system water volume, as well as in
the system components (radiators and underfloor heating).
For the defrost operation of the outdoor unit, a minimum volume and
flow must be ensured and permanently available.
The minimum volume can be provided by the open circuits (the
necessary zone valves/thermostats must be always fully open) and/or by
a buffer tank. For an optimal and most efficient defrost operation a
recommended volume is stated.
The minimum flow must be ensured within the minimum volume
available. If the minimum flow is not met, additional measures are
needed, e.g. differential bypass valve or parallel buffer. Note that if an
hydraulic separator is present it requires an additional heating circuit
pump.
In certain circumstances depending on the available energy stored in the
system, the auxiliary heater may be used to ensure the complete defrost.
Table 7 Minimum volume and flow for outdoor unit CS3400iAWS 4 OR-
S
Table 8 Minimum volume and flow for outdoor unit CS3400iAWS 6-10
OR-S
5 Installation
NOTICE
Residue in the pipework can damage the system.
Residue and particles in the heating system impair the flow rate and lead
to faults.
▶ Before connecting the indoor unit, flush the pipe system to remove
any foreign bodies.
CAUTION
Risk of injury!
During transport and installation there is a risk of crushing injury. During
maintenance, internal parts of the appliance may become hot.
▶ The installer is obliged to wear gloves during transport, installation
and maintenance.
The indoor unit is part of a heating system. Faults in the indoor unit can
occur from poor water quality in the radiators or pipework of the
underfloor heating system, or when the oxygen content in the system is
persistently high.
Oxygen causes corrosion products in the form of magnetite and
sediment.
Magnetite is an abrasive material which affects pumps, valves and
components with turbulent flow characteristics, e.g. in the condenser.
If heating systems have to be regularly refilled or if hot water samples
from these systems are cloudy, corresponding measures such as
retrofitting magnetite separators and air vents are required.
▶ Ensure the insides of the pipes are clean and do not contain any
harmful contaminants such as sulphuric compounds, oxidants,
debris and dust.
– Never store refrigerant pipes outdoors.
– Only remove seals from the pipe ends when you are ready to
connect them.
– Utmost care must be taken when routing refrigerant lines.
– Only shorten refrigerant lines using pipe cutters and seal the ends
afterwards to prevent the ingress of dirt and moisture.
Dust, foreign bodies and moisture inside the refrigerant lines can be
detrimental to oil quality or can result in compressor failure.
▶ After cutting, immediately reseal reusable lengths of refrigerant
pipes.
▶ Purge the refrigerant pipes with nitrogen.
NOTICE
Danger of malfunction due to contaminants in pipework!
Solids, metal/plastic filings, flux and thread tape residue and similar
material can get stuck in pumps, valves and heat exchangers.
▶ Keep foreign bodies from entering the pipework.
▶ Do not leave pipe parts and connections directly on the ground.
▶ When deburring, make sure that no residue remains in the pipe.
WARNING
Risk of personal injury and damage to property
Using the incorrect sensors may lead to personal injury such as scalding
as well as damage to property due to an excessively high or low
Outdoor Unit CS3400iAWS 4 OR-S
Minimum Recommended
Underfloor/fan coils 13l 35l
Radiators 4l 13l
Minimum flow 15l/min
Outdoor Unit CS3400iAWS 6-10 OR-S
Minimum Recommended
Underfloor/fan coils 27l 40l
Radiators 10l 15l
Minimum flow 15l/min
Installation
Compress 3400i AWS – 6721852066 (2023/01)
10
temperature. Comfort can also be adversely affected by using the
incorrect sensors.
▶ Make sure that you use the correct sensor with the appropriate
characteristics when exchanging a sensor (Chapter 11.6). Using
sensors with other characteristics will lead to problems because the
system will be controlled with reference to the incorrect temperature.
5.1 Transport and storage
The indoor unit must always be transported and stored in an upright
position. If needed, it may be leaned temporarily.
The indoor unit may not be stored or transported at temperatures below
– 10 °C.
5.2 Insulation
NOTICE
Material damage from frost!
In case of a power failure, the water in the pipes may freeze.
▶ All heat-conducting pipework must be provided with suitable thermal
insulation according to applicable regulations.
If it is envisaged that the cooling operation will be carried out below the
dew point, all connections and pipes must be appropriately insulated in
accordance with the valid regulations (minimum insulation thickness 13
mm).
5.3 Checklist
Each installation is different. The following checklist contains a general
description of the recommended installation steps.
As a recommendation, the refrigerant line should be connected before
the hydraulic connections.
The particle filter is installed horizontally in the heating system return
upstream of the inlet of the indoor unit. Note the direction of flow of the
filter.
1. Remove the front cover of the indoor unit.
2. Assemble the drip tray.
3. Mount the leakage copper pipe and assure the proper pipework from
the indoor unit.
4. Connect the refrigerant pipes from the outdoor unit to the indoor
unit.
5. Connect the indoor unit to the heating system.
6. Connect, fill and vent the DHW cylinder (if installed).
7. Before starting operation, fill the heating system.
8. Vent the heating system.
9. Install the outside temperature sensor and, if necessary, the room
controller.
10.Connect the CAN-BUS cable to the outdoor and indoor unit.
11.Install accessories (heating circuit module, etc.).
12.If required, connect the EMS BUS cable to the accessory.
13.Establish the electrical connection of the system.
14.Put the heating system into operation. Use the control unit to make
the necessary settings ( instructions for control unit).
15.Check that all sensors display the appropriate values.
16.Check and clean the particle filter.
17.Check the operation of the heating system after starting up (
instructions for control unit).
5.4 Removing the front cover of the indoor unit
Fig. 6 Remove front cover
To remove the front cover of the indoor unit, follow these steps:
1. Unscrew the lower part of the front cover.
2. Hold the lower part of the front cover on the holders.
3. Unscrew the upper part of the front cover.
4. Remove the upper part of the front cover.
5. Remove the intermediate connector of the control device and
complete the removal of the lower part of the front cover.
4
11
5
33
0010035653-002
Installation
11
Compress 3400i AWS – 6721852066 (2023/01)
5.5 Assembling the drip tray
NOTICE
Risk of material damage!
Drip tray should be installed to prevent water drips or leaks to the ground
that are formed by condensation.
▶ Always install the drip tray before mounting the pipes.
To assemble the drip tray:
▶ Remove the front cover of the indoor unit.
▶ Use the drip tray screws to fix the drip tray to the bottom of the indoor
unit, screw it on slightly. Do not overtighten as it can damage the drip
tray. Observe the following figure for reference:
Fig. 7 Assemble of the drip tray
0010048274-001
Installation
Compress 3400i AWS – 6721852066 (2023/01)
12
5.6 Connection
5.6.1 Connecting the indoor unit with integrated electric booster
heater
Install the following connections at the indoor unit (check the numbers of
Fig. 8):
1. Perform the connection from the drain pipe [6] to an applicable frost
protected outlet.
2. Connect refrigerant pipe (gas) from the outdoor unit to [2].
3. Connect refrigerant pipe (liquid) to the outdoor unit to [4].
4. Connect the flow pipe to the heating system to [1].
5. Connect the return pipe from the heating system to [5].
Fig. 8 Connection of an indoor unit with an integrated electric booster heater to an outdoor unit and heating system
[1] Flow pipe to heating system
[2] Refrigerant in from the outdoor unit (gas)
[3] Magnetic filter valve
[4] Refrigerant out to the outdoor unit (liquid)
[5] Return pipe from heating system
[6] Drain of the pressure relief valve and condensates
[7] Outdoor unit
4
5
2
1
6
3
7
0010035910-002
Installation
13
Compress 3400i AWS – 6721852066 (2023/01)
5.6.2 Filling the outdoor unit, indoor unit and heating system
Purge the heating system first. If the DHW cylinder is connected to the
system, it must be filled with water and also purged.
Then fill the heating system.
After the system has been filled, vent it thoroughly and clean the water
filter.
▶ Fill the system according to these instructions.
▶ Start the system according to the instructions for the control unit.
▶ Vent the system according to chapter 6.2.
▶ Clean the particle filter as described in chapter 8.1.
Fig. 9 Indoor unit with integrated electric booster heater and heating system
[Z1] Heating system (without mixing valve)
[1] Outdoor unit
[2] Manual air vent valve
[PC0] Primary circulation pump
[VC1] Heating system valves
[VC2] Drain valve
[VC3] Valves for the heating system
[VL1] Automatic air vent valve
[GC1] Pressure gauge
[SC1] Magnetic filter valve
[VW1] 3-way diverter valve
[VW2] Fill valve
See Fig. 9:
1. Make sure the power supply to the outdoor and indoor units is not
connected before the system has been completely filled and vented.
2. Activate automatic venting of VL1 by unscrewing the cap a couple of
turns without removing it.
3. Connect a hose to the heating system drain valve VC2.
4. Open the valve VC3, drain valve VC2 and fill valve VW2 to fill the
heating system.
5. Open the manual air vent valve on top of the electric heater until
water discharges without air. Close the valve afterwards.
6. Continue filling until only water comes out of the outlet hose and
bubbles no longer form in the heating system. Where appropriate,
take additional measures to vent the heating system.
7. Close the drain valve VC2.
8. Keep filling until the pressure display GC1 shows 2 bar.
9. If a DHW cylinder is installed, also fill and vent it.
10.Close the fill valve VW2.
11.Remove the hose from VC2.
12. Chapter 6.2.
5.6.3 Primary circulation pump (PC0)
The PC0 circulation pump (integrated into CS3400iAWS 10 E) is
equipped with a PWM control (speed-controlled). The pump settings are
made at the control unit of the indoor unit for the given heating system
( instructions of the control unit).
The pump speed is automatically adjusted for optimum operation.
5.6.4 Heating circuit pump (PC1)
Depending on the configuration of the heating system, a pump is needed
that is selected depending on the flow rate and pressure drop
requirements.
The pump PC1 must always be connected to the installation module of
the indoor unit according to the wiring diagram.
VC1 VC2
T
T
Z1
VC3
VW1
VW2
SC1
M
VL1
GC1
PC0
2
1
0010035629-001
Installation
Compress 3400i AWS – 6721852066 (2023/01)
14
Maximum load at the relay output of the pump PC1: 2A, cos>0.4. If
the load is higher, install an intermediate relay.
5.7 Electrical connection
DANGER
Electrical shock!
The heat pump components conduct electricity.
▶ Before working on the electrical system, disconnect the appliance
from the power supply.
NOTICE
The system will be damaged if it is turned on without water.
If the system is turned on before it is filled with heating system water, the
heating system components can overheat.
▶ Fill, vent and establish the correct operating pressure in the DHW
cylinder and heating system before turning on the heating system.
The indoor unit it is not supplied with its own safety switch from mains
power supply.
▶ For a safe operation, install a disconnection device that provides a
full disconnection under overvoltage category III conditions in the
mains wiring in accordance to the wiring rules.
CAN-BUS and EMS-BUS are not compatible.
▶ Do not connect EMS-BUS unit to CAN-BUS units.
Voltage should not vary more than 10% from the rated voltage.
The voltage between earth and neutral must be below 3V. Attention must
be made when connecting the phases of this appliance in the whole
electrical installation, so there is no phase unbalance in the household 3-
phase system (if there is any).
▶ Select the appropriate conductor cross-sections and cable types for
the respective fuse protection and routing method.
▶ Connect the heat pump according to the wiring diagram.
▶ When changing the PCB, note the colour coding.
When extending temperature sensor cables, use the following conductor
diameters:
• Cable length up to 20 m: 0.75 to 1.50 mm2
• Cable length up to 30 m: 1.0 to 1.50 mm2
5.7.1 Connecting the indoor unit
▶ Remove the front cover of the indoor unit.
▶ Remove the cover of the electrical box.
▶ Insert the CAN-BUS, sensors and other signals circuit cables through
the respective cable feed, marked with <50V. Lead the cables all the
way until they reach the front of the appliance and connect them as
indicated in Fig. 10.
▶ Insert the power circuit cables through the glands marked with
230V/400V. Lead them all the way until they reach the front of the
appliance.
▶ Connect the power supply cables in the respective terminal blocks as
indicated in chapter 5.7.7.
▶ Fasten the cable ties.
▶ After assuring all electric cables are correctly and safely connected
and secured, reassemble the electrical box cover and the front cover
of the indoor unit.
Fig. 10 Cable feeds (bottom and front view)
[1] Cable feed for power circuit cables (230V/400V)
[2] Cable feed for sensor, CAN-BUS, EMS BUS and signal circuit
cables (<50V)
[3] Installer module
[4] Support for cable ties
[5] Terminal blocks
[6] Cable circuit for sensor, CAN-BUS, EMS BUS and signal circuit
cables (<50V)
[7] Cable circuit for power circuit cables (230V/400V)
[8] Overheating protection (OHP)
[9] Relay 1,2 and 3 for electric booster heater
When routing the electrical cables in and out of the electrical box, make
sure they do not become strained.
1
2
4
3
5
6
7
0010038297-001
8
9
Installation
15
Compress 3400i AWS – 6721852066 (2023/01)
Signal circuit cables and power circuit cables cannot be in the same
cable feed.
5.7.2 Connections to installer module of the indoor unit
DANGER
Risk of electric shock!
Opening the installer module may cause injury by electric shock.
▶ Never open the installer module.
Fig. 11 Installer module of the indoor unit
[1] Connectivity gateway (accessory)
[2] CAN-BUS to outdoor unit
[3] CAN termination switch
[T0] Heating circuit flow temperature sensor
[T1] Outside temperature sensor
[TW1] DHW temperature sensor
[I1] External input 1
[I4] External input 4
[MK2]Condensation sensor(s)
[Buzzer] Alarm buzzer (accessory)
[PW2] DHW circulation pump
[PK2] Relay output, cooling mode, 230V~
[VW1]DHW 3-way valve
[PC1] Heating circulation pump
Max load for relay outputs PW2, PK2, VW1, PC1: 2A, cos φ > 0.4.
Maximum load for CUHP inst.: 6.3A
Note regarding input I1 (connection 13, 14) and I4 (connection 15,16).
The contact on the component or relay that is connected to this input
must be suitable for 5V and 1mA.
Off
On
2
3
1
M
PC1
M
PW2
PK2
MD1
T1
I1
T0
EMS bus
I4
Buzzer
0010036334-004
CAN-BUS
M
VW1
TW1
Installation
Compress 3400i AWS – 6721852066 (2023/01)
16
Coding switches A and P must not be adjusted! Otherwise malfunctions
and faults will occur.
Important: check the coding when a replacement part is used ( Fig.
36).
5.7.3 CAN-BUS
NOTICE
Malfunction due to faults!
Power circuit cables (230V~) cannot be near any CAN-BUS, sensor and
other signal circuit cables (12V DC).
▶ Ensure there is a minimum distance of 100 mm between power
circuit cables and CAN-BUS, sensor and other signal circuit cables.
CAN-BUS: do not connect 12V direct voltage output "Out 12V DC" on the
installation module.
NOTICE
Mixing up the 12V and CAN-BUS connections will result in a system
fault!
The communication circuits are not designed for a constant voltage of
12V.
▶ Make sure that both cables are connected to the correspondingly
marked connections on the printed circuit board (CAN high / CAN
low).
The outdoor unit and indoor unit are connected to each other via a
communication cable, the CAN-BUS.
A LIYCY cable (TP) 3x0.75 mm2 (or equivalent) is suitable as an
extension cable outside of the unit. Alternatively, twisted pair cables
approved for outdoor use with a minimum cross-section of 0.75 mm2
can be used. One of the shielded ends must be connected to the nearest
grounding terminal in the indoor unit structure. The other end cannot be
connected to the grounding or any metal part of the outdoor unit
structure.
The maximum permissible cable length is 30 m.
The Can Termination Switch marks the start and end of the CAN-BUS
connection. Make sure that the right boards are terminated and that all
other boards within the CAN-BUS connection are not terminated.
Fig. 12 CAN-BUS connection
[1] Indoor unit
[2] Outdoor unit
5.7.4 EMS BUS
NOTICE
Malfunction due to faults!
Power circuit cables (230V~) cannot be near any EMS-BUS, sensor and
other signal circuit cables (12V DC).
▶ Ensure there is a minimum distance of 100 mm between power
circuit cables and EMS-BUS, sensors and other signal circuit cables.
The control unit is connected via the EMS-BUS to the installer module of
the indoor unit.
The control unit is supplied with power via the BUS cable. The polarity of
the two EMS-BUS cables is irrelevant.
The following applies to accessories that are connected to the EMS-BUS
(see also the installation instructions for the respective accessories):
▶ If several BUS units are installed, there must be a minimum spacing of
100 mm between them.
▶ If several BUS units are installed, connect them in parallel or in a star
configuration.
▶ Use cable with a minimum cross-section of 0.5 mm2.
▶ In case of external inductive interferences (e.g. from PV systems),
use screened cables. Connect only one end of the cable shield to the
nearest ground.
2
1
0010036947-001
LN
Can H
Can L
GND
Out 12V DC
CAN high
CAN low
gnd
Installation
17
Compress 3400i AWS – 6721852066 (2023/01)
5.7.5 Fitting temperature sensors
In the default setting, the control unit automatically controls the flow
temperature based on the outdoor temperature. A room controller can
be installed for greater comfort. If cooling mode is intended, a room
controller is absolutely essential.
Flow temperature sensor T0
The temperature sensor is part of the scope of delivery of the indoor unit.
▶ Install the temperature sensor 1-2 meters downstream of the
junction of the DHW coil circuit, if installed.
▶ Connect the flow temperature sensor on the installation module in
the control device of the indoor unit to terminal T0.
Outdoor temperature sensor T1
A screened cable must be used if the outdoor temperature sensor cable
is longer than 15 m. The screened cable must be earthed to the indoor
unit. The max. length of a screened cable is 50 m.
The cable to the outdoor temperature sensor must meet the following
minimum requirements:
• Cable diameter: 0.5 mm2
• Resistance: max. 50 /km
•Number conductors: 2
▶ Install the sensor on the coldest side of the house, normally facing
north. The sensor must be protected against direct sunlight, air vents
or other factors which could affect the temperature measurement.
The sensor must not be installed directly under the roof.
▶ Connect the outdoor temperature sensor T1 to the terminal T1 on the
installer module.
Fig. 13 Position of the outdoor temperature sensor
5.7.6 External connections
NOTICE
Material damage due to incorrect connection!
The electrical components may become damaged if connected to the
wrong voltage or current.
▶ Only make connections that are adapted for 5 V and 1 mA to the
external connections of the indoor unit.
▶ If coupling relays are required, only use relays with gold contacts.
The external inputs I1 and I4 can be used for remote control of individual
control unit functions.
Functions which are activated via the external inputs are described in the
instructions for the control unit.
The external input is either connected to a manual switch or a control
device with a 5 V relay output.
1/2H(min 2m)
H
N
S
WE
NW NE
SW SE
6 720 809 156-23.1I
Commissioning
Compress 3400i AWS – 6721852066 (2023/01)
18
5.7.7 Terminals for electrical connections
Terminals for electrical connection of integrated electric booster
heater (factory configuration, three-phase)
Fig. 14 Terminals for electrical connection, 5.85kW 400V 3N~
[1] 400V 3N~10A, power supply to indoor unit
[2] 230V~, controller (EMS modules) accessory
[3] 230V~, power supply for heating cable (accessory)
Terminals for electrical connection of integrated electric booster
heater (alternative configuration, single-phase)
Fig. 15 Terminals for electrical connection, 5.85kW 230V~
[1] 230V~ 32A, power supply for indoor unit
[2] 230V~, controller (EMS modules) accessory
[3] 230V~, power supply for heating cable (accessory)
Power to the outdoor unit is supplied separately from the distribution
board (230V~).
6 Commissioning
Before you turn on the appliance please check that all external
connected devices are well earth connected.
6.1 Commissioning checklist
1. Power on the unit.
2. Commission the heating system. Use the control unit to make the
necessary settings ( instructions for control unit).
3. Vent the entire heating system after commissioning.
4. Check that all sensors display the appropriate values.
5. Check and clean the particle filter.
6. Check the operation of the heating system after startup
(instructions for control unit).
0010036826-002
N
2N
2L3
L3
L2
L1
Commissioning
19
Compress 3400i AWS – 6721852066 (2023/01)
6.2 Venting the indoor unit
Fig. 16 Indoor unit with an integrated electric booster heater and heating system
[Z1] Heating system (without mixing valve)
[1] Outdoor unit
[2] Manual air vent valve
[PC0] Primary circulation pump
[VC1] Heating system valves
[VC2] Drain valve
[VC3] Valves for the heating system
[VL1] Automatic air vent valve
[GC1] Pressure gauge
[SC1] Magnetic filter valve
[VW1] 3-way diverter valve
[VW2] Fill valve
See Fig. 16:
1. Connect the power supply to the outdoor and indoor units.
2. Activate "Only auxiliary heater" and make sure that the heating
circulation pump PC1 is running (if installed).
3. Remove the pulse width modulation plug PC0 from the primary
circulation pump PC0 so that it can operate at maximum speed.
4. Deactivate the "Only auxiliary heater" function when no more air is
coming out of the VL1 or the manual air vent valve on top of the
electric heater. Close the manual air vent valve.
5. Connect the PC0 pulse width modulation plug to the heating pump.
6. Clean the particle filter SC1.
7. Also vent via the other air vent valves of the heating system (e.g.
radiators).
8. Check the pressure on the pressure gauge GC1 and top up with the
fill valve VW2 if needed. The pressure should be 0.3–0.7 bar above
the pressure set in the expansion vessel.
9. Check that the heat pump is running and that there are no alarms.
6.3 Adjusting the operating pressure of the heating
system
Table 9 Operating pressure
▶ Top up to 1.5–2.0 bar unless otherwise specified.
▶ If the pressure does not remain constant, check whether the heating
system has any leaks and if the capacity of the expansion vessel for
the heating system is sufficient.
VC1 VC2
T
T
Z1
VC3
VW1
VW2
SC1
M
VL1
GC1
PC0
2
1
0010035629-001
Display on the pressure gauge
1.2 bar Minimum charge pressure. When the system is cold, the
operating pressure must be kept at roughly 0.3–0.7 bar
above the pre-charge pressure of the nitrogen cushion in
the expansion vessel. The pre-charge pressure is 0.7–
1.0 bar as a rule.
3 bar Maximum charging pressure at maximum heating water
temperature: must not be exceeded (the pressure relief
valve will open).
Operation without the outdoor unit (individual operation)
Compress 3400i AWS – 6721852066 (2023/01)
20
6.4 Pressure switch and overheating protection
The pressure monitor and overheating protection are only installed in
indoor units with integrated electric booster heater.
The pressure switch and overheating protection are connected in series.
Alarms or information triggered at the control unit indicate either that
the operating pressure is too low, or that the temperature of the electric
booster heater is too high.
NOTICE
Material damage from running dry!
When the primary circulation pump PC0 is operated for a long time when
the operating pressure is too low, it can be damaged.
▶ Eliminate any leaks in the system that are indicated when the
pressure switch is triggered.
The triggering of the pressure switch only blocks the electric booster
heater. The primary circulation pump PC0 and the outdoor unit can
continue to run if there is a risk of frost.
Pressure switch
The indoor unit has a pressure switch which triggers once the pressure in
the heating system falls below 0.5 bar. Once the pressure exceeds
0.5 bar, the pressure switch is automatically reset.
▶ Make sure that the expansion vessel and pressure relief valve are
configured for the indicated operating pressure, and check whether
an additional expansion vessel is necessary in the system.
▶ Check the system for leaks, and use a larger expansion vessel if
necessary.
▶ Slowly increase the pressure in the heating system by adding water
through the fill valve.
Overheating protection
The overheating protection triggers when the temperature of the electric
booster heater rises above 95 °C.
▶ Check the operating pressure.
▶ Check the heating and DHW settings.
▶ Reset the overheating protection. To do this, press the button on the
terminal box.
6.5 Function test
▶ Start the system according to the instructions for the control unit.
▶ Vent the system according to chapter 6.2.
▶ Test the active components of the system as described in the
instructions for the control unit.
▶ Check if the start conditions have been met for the outdoor unit.
▶ Check if there is a heating or hot water demand.
-or-
▶ Draw off DHW or increase the heating curve to generate demand (if
necessary, adjust the setting for Heating mode down if the outside
temperature is high).
▶ Check if the outdoor unit starts.
▶ Make sure that there are no current alarms (see instructions for the
control unit).
-or-
▶ Eliminate any faults according to the control unit instructions.
▶ Check the operating temperatures in accordance with the
instructions for the control unit.
6.5.1 Operating temperatures
The operating temperature check must be performed in heating mode
(not in DHW or cooling mode).
For optimum system operation, the flow rate in the heat pump and
heating system must be monitored. This check should be performed
when the heat pump is operating for more than 10 minutes and during
high compressor heating output.
The temperature differential for the heat pump must be set for the
different heating systems.
▶ With underfloor heating system 5 K as temp.diff. Setting heating.
▶ With radiators 8 K as temp.diff. Setting heating.
These settings are optimal for the heat pump.
Check the temperature differential at high compressor heating output:
▶ Open the diagnosis menu.
▶ Select Monitored values.
▶ Select Heat pump.
▶ Select Temperatures.
▶ Read the primary flow temperature (heat transfer medium out,
sensor TC3) and return temperature (heat transfer medium in,
sensor TC0) in heating mode. The flow temperature must be higher
than the return temperature.
▶ Calculate the difference TC3–TC0.
▶ Check whether the difference corresponds to the delta value set for
heating mode.
If the temperature differential is too large:
▶ Vent the heating system.
▶ Clean filters / strainers.
▶ Check pipe dimensions.
Temperature differential in the heating system
▶ Set the output at the heating pump PC1 so that the following
difference is achieved:
▶ With underfloor heating system: 5 K.
▶ With radiators: 8 K.
7 Operation without the outdoor unit (individual
operation)
The indoor unit can be started without the outdoor unit being connected,
for example if the outdoor unit is to be installed at a later date. This is
termed individual operation or stand-alone operation.
With individual operation, the indoor unit only uses the integrated or
external auxiliary heater for heating and DHW heating.
Commissioning in individual operation:
▶In the «Heat pump» service menu, select the option «Stand-alone
mode» ( instructions for the control unit).
Maintenance
21
Compress 3400i AWS – 6721852066 (2023/01)
8 Maintenance
DANGER
Electrical shock!
▶ Before working on the electrics, the main power supply must be
switched off.
DANGER
Risk of electric shock!
Opening the installer module may cause injury by electric shock.
▶ Do not open the installer module to replace a component. If the
installer board or one of its components needs to be replaced,
remove the installer module completely and replace with a new one.
NOTICE
Deformation due to heat!
If the temperature is too high, the insulation (EPP) in the indoor unit
deforms.
▶ When carrying out brazing work in the heat pump, protect the
insulation with a heat resistant cloth or damp cloth.
▶ Only use original spare parts!
▶ Refer to the spare parts list when ordering spare parts.
▶ Replace removed gaskets and O-rings with new ones.
The tasks described below must be carried out during an inspection.
Display activated alarm
▶ Check the alarm log (instructions for the control device).
Function test
▶ Carry out function check ( Chap. 6.5).
Install power cable
▶ Check the power cable for mechanical damage. Replace damaged
cables.
8.1 Particle filter
WARNING
Strong magnet!
Can be harmful to pacemaker wearers.
▶ Do not clean the filter or check the magnetite indicator if you are a
pacemaker wearer.
The filter prevents particles and contamination from entering the heat
pump. Over time, the filter may become blocked and must be cleaned.
The system does not need to be emptied to clean the filter. The filter is
integrated into the shut-off valve.
Cleaning the strainer
▶ Close the valve (1).
▶ Unscrew the cap (manually) (2).
▶ Take out the strainer and clean it with running water over it or by
pressure cleaning.
▶ Check attached debris on the cap’s magnet (3) and clean it.
▶ Reinstall the strainer (4). For proper assembly, make sure that the
guide bumps fit into the recesses in the valve.
▶ Screw the cap back on (hand tight).
▶ Open the valve (5).
Fig. 17 Cleaning the strainer
8.2 Replacing components
If you intend to replace a component and the indoor unit needs to be
emptied and refilled, carry out the following steps:
1. Switch off the outdoor and the indoor units.
2. Make sure that the automatic air vent valve VL1 is open.
3. Close the valves to the heating system, particle filter SC1 and valve
VC3.
4. Drain the appliance via a suitable drain in the system.
5. Wait until no more water flows into the drain.
6. Replace components.
7. Open the filling valve VW2 to load water into the pipe leading to the
indoor unit.
8. Continue filling until only water emerges from the hose at the drain
and the indoor unit no longer contains air bubbles.
9. Close the drain and continue filling the system until the reading at the
pressure gauge GC1 is 2bar.
10.Close the filling valve VW2.
11.Reconnect the power supply to the outdoor and indoor units.
12.Ensure that the heating circulation pump PC1 (if installed) is running.
13.Pull the connector PC0 PWM cable off the primary circulation pump
(PC0) so that it runs at maximum speed.
14.Activate “auxiliary heater only” at the control unit.
15.The pressure must remain the same for 10 minutes. Only then should
the electric booster heater be deactivated at the control unit.
16.Connect the PC0 PWM contact to the primary circulation pump
(PC0).
17.Clean the particle filter SC1.
18.Open valves VC3 and SC1 to the heating system.
19.Check the pressure at the pressure gauge GC1, if the pressure is less
than 2bar top up via the filling valve VW2.
1.
2.
12
3
2.
1.
5
4
0010033735-001
Installation of accessories
Compress 3400i AWS – 6721852066 (2023/01)
22
9 Installation of accessories
9.1 CAN-BUS accessories
Accessories to be connected to the CAN-BUS are connected in
parallel to the CAN-BUS connection for the outdoor unit on the
installation card in the indoor unit. Accessories can also be connected in
series with other units connected to the CAN-BUS.
With accessories, all 4 connections must be assigned. You should
therefore also connect the "Out 12 V DC" connection on the installation
module.
Max. Cable length 30 m
Minimum cross-section dia. = 0.75 mm2
9.2 EMS-BUS for accessories
The following applies to accessories that are connected to the EMS-BUS
(see also the installation instructions for the respective accessories):
▶ If several BUS units are installed, there must be a minimum spacing of
100 mm between them.
▶ If several BUS units are installed, connect them in series or in a star
configuration.
▶ Use cable with a minimum cross-section of 0.5 mm2.
▶ In case of external inductive interferences (e.g. from PV systems),
use screened cables. Only earth the shielding to the casing on one
side.
▶ Connect the cable on the installation module to terminal EMS-BUS.
If a component is already connected to the EMS terminal, establish the
connection in parallel to the same terminal according to fig. 18.
Fig. 18 EMS connection on the installer module
EMS NSC/IP
0010012105-002
Installation of accessories
23
Compress 3400i AWS – 6721852066 (2023/01)
9.3 External inputs
Route all low voltage cables (measuring current) separately from cables
carrying 230 V or 400 V to avoid inductive interference (minimum
separation of 100 mm).
When extending temperature sensor cables, use the following conductor
diameters:
• Cable up to 20 m in length: 0.75 to 1.50 mm2
• Cable up to 30 m in length: 1.0 to 1.50 mm2
The relay output PK2 is active in cooling mode and can be used to control
the cooling/heating mode of a fan convector or a heating pump, or to
control underfloor heating circuits in humid rooms.
Maximum load at relay outputs: 2 A, cosϕ > 0.4. If the load is higher, it
will be necessary to use an intermediate relay.
WARNING
Material damage from incorrect connection!
The electrical components may become damaged if connected to the
wrong voltage or current.
▶ Only make connections that are adapted for 5 V and 1 mA to the
external connections of the indoor unit.
▶ If coupling relays are required, only use relays with gold contacts.
9.4 Installation of the domestic hot water cylinder
If the domestic hot water cylinder (DHW) is installed lower than the
outdoor unit (e.g. in the cellar), a natural circulation may occur that leads
to heat loss in the cylinder.
▶ Install a non-return valve in the circuit to prevent natural circulation if
the installation height of the DHW cylinder is below the outdoor unit.
Fig. 19 Domestic hot water cylinder
[1] Non-return valve
Follow the mounting and connection instructions from the DHW cylinder
documentation.
The selection of the volume of the DHW cylinder depends on the type of
consumption, as showed in the following table:
CW1
TW1
1
DHW output for CS3400iAWS 4 OR-S1)
Time2) 5 minutes 10 minutes 20 minutes
Tap consumption (l/min)3) 5 10 15 5 10 15 5 10 15
1 shower
Total consumption volume (l)4) 25 50 75 50 100 150 100 200 300
Possible tank volume (l)5) 100 100 100 100 100 100 100 160 160
2 showers
Total consumption volume (l)4) 50 100 150 100 200 300 200 400 600
Possible tank volume (l)5) 100 100 120 100 160 200 160 300 500
4 showers
Total consumption volume (l)4) 100 200 300 200 400 600 400 800 1200
Possible tank volume (l)5) 100 160 200 160 300 500 300 600 1000
1) DHW set to 60 °C and inlet temperature 15 °C
2) Time per shower
3) Maximum tap flow
4) Maximum volume of water consumed during a shower for one time period and type of tap flow
5) Optimized cylinder volume to the domestic hot water consumption profile
Installation of accessories
Compress 3400i AWS – 6721852066 (2023/01)
24
The coil area of the DHW tank must be ≥ 2 m2.
9.5 DHW cylinder temperature sensor TW1
When a DHW cylinder is installed, a temperature sensor TW1 must be
connected to the system.
▶ Connect the hot water temperature sensor TW1 to terminal TW1 on
the installer module in the indoor unit.
9.6 Diverter valve VW1
System solutions with a domestic hot water cylinder require a diverter
valve (VW1). Connect the diverter valve VW1 on the installer module in
the indoor unit to terminal VW1 (fig. 20).
Fig. 20 Connection of the diverter valve VW1 on the installer module
Fig. 21 Molex plug
The 3-way diverter valve has a Molex plug in which only terminals 2, 3
and 6 are assigned.
Make the following connections on the installer module:
▶N – Connection to terminal N, VW1 on the installer module
▶Y – Connection to terminal 53, VW1 on the installer module
▶L – Connection to terminal 54, VW1 on the installer module
Fig. 22 Hydraulic for diverter valve TW1
[A] Return from domestic hot water cylinder
[B] Return from heating system (or buffer cylinder)
[AB] Flow from the indoor unit
Fig. 23 Contact closed, connection A open
During domestic hot water heating, the contact is closed and connection
A is open.
DHW output for CS3400iAWS 6-10 OR-S1)
Time2) 5 minutes 10 minutes 20 minutes
Tap consumption (l/min)3) 5 10 15 5 10 15 5 10 15
1 shower
Total consumption volume (l)4) 25 50 75 50 100 150 100 200 300
Possible tank volume (l)5) 100 100 100 100 100 100 100 100 200
2 shower
Total consumption volume (l)4) 50 100 150 100 200 300 200 400 600
Possible tank volume (l)5) 100 100 100 100 160 200 160 300 500
4 shower
Total consumption volume (l)4) 100 200 300 200 400 600 400 800 1200
Possible tank volume (l)5) 100 160 250 160 300 450 300 600 1000
1) DHW set to 60 °C and inlet temperature 15 °C
2) Time per shower
3) Maximum tap flow
4) Maximum volume of water consumed during a shower for one time period and type of tap flow
5) Optimized cylinder volume to the domestic hot water consumption profile
0010025633-002
2
6
3
L
N
Y
001002031-002
Installation of accessories
25
Compress 3400i AWS – 6721852066 (2023/01)
Fig. 24 Contact open, connection B open
In heating mode, the contact is open and connection B is open.
9.7 DHW circulation pump PW2 (accessory)
The pump settings are made on the control unit of the indoor unit (
instructions of the control unit).
9.8 Several heating circuits (with heating circuit module)
At delivery, a heating circuit without mixing valve can be controlled via
the controller. If more circuits are to be installed, a heating circuit module
is required for each one.
▶ Install the heating circuit module, mixing valve, heating circulation
pump and other components according to the selected hydraulic
solution.
▶ Connect the heating circuit module to the installer module in the
electric box of the indoor unit on terminal EMS.
▶ Perform the settings for multiple heating circuits according to the
instructions for the control unit.
9.9 Installation with swimming pool
NOTICE
Danger of faults!
If the swimming pool mixer is installed at the wrong location in the
system, faults may occur. The swimming pool mixer must not be installed
in the flow where it could block the pressure relief valve.
▶ Assemble the swimming pool mixer in the return to the indoor unit (as
shown in the example image for swimming pool installation).
▶ Mount the tee connection piece in the flow from the indoor unit
upstream of the bypass.
▶ Do not install the swimming pool mixer as heating circuit in the
system.
A prerequisite for using the swimming pool heating is the installation of a
swimming pool module (accessory).
▶ Install the swimming pool mixer.
▶ Insulate all pipes and connections.
▶ Install the pool module ( Instructions for the pool module).
▶ Set the elapsed time of the swimming pool diverter valve during
commissioning ( instructions for control unit).
▶ Make the necessary settings for the swimming pool mode (
instructions for control unit).
Fig. 25 Example showing swimming pool installation
[1] Swimming pool module
[2] Swimming pool
[VC1] Swimming pool mixer
[HS] Heating system
1
M
VC1
HS
M
2
1
0010035917-001
Environmental protection and disposal
Compress 3400i AWS – 6721852066 (2023/01)
26
9.10 Connect-Key K 30 RF
Connect-Key K 30 RF is a WLAN communication module for controlling
and monitoring your heating system remotely. It is used as an interface
between the heating system and the Internet.
For further information on how to use and install the Connect-Key K 30
RF, please read the installation manual of the accessory.
A WLAN router, internet connection and the Bosch HomeCom Easy app
are required to use this product.
Installation on the wall:
Fig. 26 Placing the Connect-Key K 30 RF
When installing the holder for the Connect-Key K 30 RF on the wall:
1. Find a place next to the indoor unit that has sufficient signal quality to
communicate to the WLAN router.
2. Drill the holes to fix the bracket on the wall. For that, use a suitable
drill bit.
3. Screw on the bracket firmly to the wall.
The holder may also be placed on the side cover of the indoor unit using
the holder's incorporated magnet.
10 Environmental protection and disposal
Environmental protection is a fundamental corporate strategy of the
Bosch Group.
The quality of our products, their economy and environmental safety are
all of equal importance to us and all environmental protection legislation
and regulations are strictly observed.
We use the best possible technology and materials for protecting the
environment taking account of economic considerations.
Packaging
Where packaging is concerned, we participate in country-specific
recycling processes that ensure optimum recycling.
All of our packaging materials are environmentally compatible and can be
recycled.
Used appliances
Used appliances contain valuable materials that can be recycled.
The various assemblies can be easily dismantled. Synthetic materials are
marked accordingly. Assemblies can therefore be sorted by composition
and passed on for recycling or disposal.
Old electrical and electronic appliances
This symbol means that the product must not be disposed
of with other waste, and instead must be taken to the waste
collection points for treatment, collection, recycling and
disposal.
The symbol is valid in countries where waste electrical and
electronic equipment regulations apply, e.g. "(UK) Waste Electrical and
Electronic Equipment Regulations 2013 (as amended)". These
regulations define the framework for the return and recycling of old
electronic appliances that apply in each country.
As electronic devices may contain hazardous substances, it needs to be
recycled responsibly in order to minimize any potential harm to the
environment and human health. Furthermore, recycling of electronic
scrap helps preserve natural resources.
For additional information on the environmentally compatible disposal
of old electrical and electronic appliances, please contact the relevant
local authorities, your household waste disposal service or the retailer
where you purchased the product.
You can find more information here:
www.weee.bosch-thermotechnology.com/
11 Technical information
11.1 Specifications - Indoor unit with integrated electric booster heater
0010039342-001
CS3400iAWS 10 E Unit CS3400iAWS 4
OR-S
CS3400iAWS 6
OR-S
CS3400iAWS 8
OR-S
CS3400iAWS 10
OR-S
Electrical wiring specifications
Power supply V 4001) / 2302)
Recommended fuse size A 3x10 / 323)
Backup Electrical Heater Load kW 1.95/3.90/5.85
Heating system
Connection type G1”
Maximum operating pressure kPa/bar 300/3.0
Minimum operating pressure kPa/bar 120/1.2
Expansion vessel l 8
Nominal flow (underfloor heating) l/s 0.20 0.30 0.39 0.49
Max. externally available pressure at nominal flow
(underfloor heating)
kPa74645138
Nominal flow (radiators) l/s 0.13 0.19 0.26 0.32
Max. externally available pressure at nominal flow
(radiators)
kPa75757061
Technical information
27
Compress 3400i AWS – 6721852066 (2023/01)
Table 10 Indoor unit with integrated electric booster heater
11.2 Primary circulation pump diagram (PC0)
Primary circulation pump diagram (PC0) for the heating system
CS3400iAWS 10 E.
Fig. 27 Capacity curve of the primary circulation pump (PC0)
11.3 System solutions
The outdoor unit and the indoor unit may only be installed according to
the manufacturer's official system solutions.
Deviating system solutions are impermissible. Warranty may be voided
in the case of damage and problems resulting from impermissible
installation.
The indoor unit is prepared to work without bypass/buffer, if the volume
and minimum flow declared in chapter 4.2 are permanently met and if
the pressure drop in the circuit is below the pressure available from the
primary circulation pump (PC0) as stated in table 10.
If the appliance is directly connected to the heating circuit (without
bypass or buffer tank) and consequently no heating circulation pump
(PC1) is installed, the primary circulation pump (PC0) must be set to
continuous operation mode. Use the control unit to select: Service menu
> Heat pump > Pumps > Prim. heating pump mode > On.
Some system configurations require accessories (buffer cylinder, 3-way
valve, mixing valve, DHW circulation pump). If a heating circulation pump
(PC1) is installed, this is controlled by the controller in the indoor unit.
The following table shows different system solutions:
Minimum flow (during defrosting)4) l/min 15
Minimum/maximum water operating temperature
(cooling5)/heating mode)
°C 7/80
Pump type Grundfos UPM2K 25-75 PWM (EEI≤0,23)6)
General Information
Installation altitude up to 2000m above sea level
IP rating IPX1
Dimensions (width x depth x height) mm 485 x 398 x 700
Weight kg 41
1) 400V 3N ~ AC 50 Hz. The outdoor unit must have a separate power supply.
2) For 230V ~1N AC 50 Hz. The outdoor unit must have a separate power supply.
3) Fuse characteristic gL/C.
4) If the minimum flow rate in the system cannot be ensured, a buffer cylinder is essential.
5) If cooling is available.
6) The benchmark for the most efficient circulators is EEI ≤ 0,20.
CS3400iAWS 10 E Unit CS3400iAWS 4
OR-S
CS3400iAWS 6
OR-S
CS3400iAWS 8
OR-S
CS3400iAWS 10
OR-S
0
1
2
3
4
5
6
7
8
0.0 0.5 1.0 1.5 2.0 2.5 3.0
H [m]
Q [m³/h]
0010039797-001
Heat distribution
system
Type of valves in
system
Outdoor unit Open system size (l) Electric booster
heater On/Off
System solution
UF heating/ Fan coils No auto control valves
or on/off valves with
open circuits
CS3400iAWS 4 OR-S <13 - Buffer1)
13<35 Electric booster heater
on
Direct system2) or
bypass
Electric booster heater
off
Buffer1)
>35 - Direct system2) or
bypass
On/off valves with no
open circuits
--Buffer
1)
No open circuits and
differential pressure
- - Serial buffer1)
Technical information
Compress 3400i AWS – 6721852066 (2023/01)
28
Table 11 System solutions for underfloor heating, fan coils and radiators
11.3.1 Explanations of the system solutions
UF heating/ Fan coils No auto control valves
or on/off valves with
open circuits
CS3400iAWS 6-10 OR-
S
<27 - Buffer3)
27<40 Electric booster heater
on
Direct system2) or
bypass
Electric booster heater
off
Buffer3)
>40 Direct system2) or
bypass
On/off valves with no
open circuits
-Buffer
3)
No open circuits and
differential pressure
- Serial buffer3)
Radiators No auto control valves
or on/off valves with
open circuits
CS3400iAWS 4 OR-S <4 - Buffer4)
4<13
Electric booster heater
on
Direct system2) or
bypass
Electric booster heater
off
Buffer4)
>13 - Direct system2) or
bypass
On/off valves with no
open circuits
--Buffer
4)
No open circuits and
differential pressure
- - Serial buffer4)
Radiators No auto control valves
or on/off valves with
open circuits
CS3400iAWS 6-10 OR-
S
<10 - Buffer5)
10<15 Electric booster heater
on
Direct system2) or
bypass
Electric booster heater
off
Buffer5)
>15 - Direct system2) or
bypass
On/off valves with no
open circuits
--Buffer
5)
No open circuits and
differential pressure
- - Serial buffer5)
1) Buffer size must be more than 35l.
2) Direct system only if minimum volume and flow are permanetly met.
3) Buffer size must be more than 40l.
4) Buffer size must be more than 13l.
5) Buffer size must be more than 15l.
Heat distribution
system
Type of valves in
system
Outdoor unit Open system size (l) Electric booster
heater On/Off
System solution
General
SEC 20 Installation module integrated in the heat pump
module
HPC 410 Control unit
CR 10 H Room controller (accessories)
T1 Outdoor sensor
MK2 Humidity sensor (accessory)
CW1 DHW cylinder (accessory)
VW1 Diverter valve (accessory)
PW2 DHW circulation pump (accessory)
TW1 Hot water temperature sensor
Heating circuit without mixer
PC1 Circulation pump, heating circuit
T0 Flow temperature sensor
Heating circuit with mixer
MM 100 Heating circuit module (control unit for circuit)
PC1 Pump for heating circuit 2
VC1 Mixer
TC1 Flow temperature sensor, heating circuit 2, 3 ...
MC1 Thermal shut-off valve, heating circuit 2, 3 ...
Technical information
29
Compress 3400i AWS – 6721852066 (2023/01)
11.3.2 Bypass of the heating system
If the heating system is not able to permanently meet the minimum
volume and flow and if the pressure loss in the circuit is more than
allowed, a bypass should be installed according to the instructions.
Fig. 28 Indoor unit with heating circuit and bypass
[1] Bypass
[2] Flow pipe diameter
[3] Return pipe diameter
Fig. 29 Indoor unit with heating circuit and DHW heating
[1] Bypass
[2] Flow pipe diameter
[3] Return pipe diameter
Fig. 30 Bypass details (
[1] [CS3400iAWS 10 E fig. 28 and 29)
[L] Minimum bypass length
[D] Pipe diameter
The bypass must have an outer pipe diameter of 22 mm (Cu) and be
installed between the supply and return. The bypass must be installed
close to the indoor unit (CS3400iAWS 10 E), and no more than 1.5 m
away from it.
Table 12 Pipe diameter and bypass lengths
Fig. 31 Bypass
[A] Bypass, straight design
[B] Bypass, U-shaped design
T
T
0010036801-001
1
2
3
PC1
1
2
3
SC1
PC0
PC1
0010036802-001
Outdoor
unit
([2] and [3]
fig. 28
[CS3400iAW
S 10 E] and
29) external
flow/return
pipe diameter
([1] fig.
28 and 29)
external
bypass pipe
diameter ([D]
fig. 30)
Bypass design
([A] fig.
31)
([B] fig.
31)
Minimum
bypass
length ([L]
fig. 30)
Minimum
bypass
length ([L]
fig. 30)
mm mm mm mm
CS3400iA
WS 4-10
OR-S
22 22 200 100
Technical information
Compress 3400i AWS – 6721852066 (2023/01)
30
11.3.3 System with integrated booster heater, DHW and heating circuit without bypass and mixing valve
Fig. 32 Outdoor unit with indoor unit and one heating circuit
[1]Installed in the indoor unit.
[5] Mounted on the wall.
This hydraulic system is only envisaged for heating systems that comply
with the requirements of flow, volume and pressure loss.
MK2
1
SEC 20
CW1
TW1
PW2
5
CR 10 H
M
VW1
B
AB
A
400 V AC
CS3400i AWS
400 /230 V AC
T1
T0
IDU AWS E
T T
HPC410
1
6 720 878 475-01.1T
Technical information
31
Compress 3400i AWS – 6721852066 (2023/01)
11.3.4 System with integrated booster heater, DHW and heating circuit with or without mixing valve and with bypass
Fig. 33 Outdoor unit with indoor unit, DHW and one or more heating circuits
[1]Installed in the indoor unit
[4] Mounted in the station or on the wall
[5] Mounted on the wall
PC1 and bypass are required in this hydraulic system ( Chapter
11.3.2).
MK2
CW1
TW1
PW2
M
VW1
B
AB
A
400 V AC
CS3400i AWS
400 /230 V AC
T1
T0
IDU AWS E
MC1
TC1
M
VC1
T T
PC1
1
SEC 20
TT
PC1
4
MM 100
2
5
CR 10 H
5
CR 10 H
V
HPC410
1
6 720 878 476-01.1T
Technical information
Compress 3400i AWS – 6721852066 (2023/01)
32
11.3.5 System with integrated booster heater, buffer, DHW and heating circuit with or without mixing valve
Fig. 34 Outdoor unit with indoor unit, buffer and one or more heating circuits
[1]Installed in the indoor unit
[4] Mounted in the station or on the wall
[5] Mounted on the wall
PC1 is required in this hydraulic system ( Chapter 11.3.2).
MK2
MC1
TC1
MVC1
T T
PC1
1
SEC 20
CW1
TW1
PW2
TT
PC1
4
MM 100
2
5
CR 10 H
5
CR 10 H
400 V AC
CS3400i AWS
400 /230 V AC
T1
V
IDU AWS E
HPC410
1
buffer
T0
M
VW1
AB
A
B
MK2
6 720 878 477-01.1T
Technical information
33
Compress 3400i AWS – 6721852066 (2023/01)
11.3.6 Explanation of symbols
Table 13 Hydraulic symbols
Symbol Description Symbol Description Symbol Description
Pipework/cables
Flow - heating/solar Brine circuit out DHW circulation
Return - heating/solar Potable water Electrical Wiring
Brine flow Hot water Electrical wiring with break
Mixing valves/valves/temperature sensors/pumps
Valve Differential pressure regulator Pump
Revision bypass Water pressure relief valve Non-return valve
Flow regulating valve Safety assembly Temperature sensor / switch
Overcurrent valve 3-way mixing valve
(mixing/distribution)
High limit safetycut-out
Filter shut-off valve DHW mixer,
thermostatic
Flue gas temperature sensor/
switch
Cap valve 3-way mixing valve
(changeover)
Flue gas temperature limiter
Valve, motorized 3-way mixing valve (change over,
de-energised when closed to II)
Outdoor ambient temperature
sensor
Valve, thermal 3-way mixing valve (change over,
de-energised when closed to A)
Wireless outside
temperaturesensor
Shut-off valve, magnetically
controlled
4-way mixing valve ...wireless...
Miscellaneous
Thermometer Drain outlet with siphon Low loss header with sensor
Pressure gauge System separation according to
EN1717
heat exchanger
Filling/draining Expansion vessel with
cap valve
Volumetric flow ratemeasuring
device
Water filter Magnetite separator Water sink
Heat meter Air separator Heat. circ.
DHW outlet Automatic air vent valve Underfloor heating circuit
Relay Expansion joint Low-loss header
Immersion heater
M
T
M
M
M
II
III
I
T
M
A
B
AB
M
T
J
000
∏
R
Technical information
Compress 3400i AWS – 6721852066 (2023/01)
34
11.4 Wiring diagram
11.4.1 Installer module of indoor unit with integrated electric booster heater
DANGER
Risk of electric shock!
Opening the installer module may cause injury by electric shock.
▶ Never open the installer module.
Fig. 35 Installer module of the indoor unit
[1] A and P encoders
[2] Connectivity gateway (accessory)
[3] CAN-BUS to outdoor unit
[4] CAN termination switch
[5] Alarm electric heater (230V~ input voltage)
[6] Power supply, 230V~ from terminal blocks
[7] Fuse 5x20, 6.3A time lag
[T0] Heating circuit flow temperature sensor
[T1] Outside temperature sensor
[TW1] DHW temperature sensor
[TC0] Return temperature sensor
[TC1] Flow temperature sensor (electric booster heater)
[TC3] Condenser temperature sensor
[I1] External input 1
[I4] External input 4
[TR3] Refrigerant liquid temperature
[MK2]Condensation sensor(s)
[Buzzer] Alarm buzzer (accessory)
[PC0 PWM]PWM signal, primary circulation pump
[JR1] Refrigerant gas pressure sensor
[FE] Electric booster heater overheating alarm
[K2] Electric booster heater contactor EE2
[K1] Electric booster heater contactor EE1
[K3] Electric booster heater contactor EE3
[PW2]DHW circulation pump
[EA1] Connection to heating cable terminal blocks (outdoor unit
accessory)
[PK2] Relay output, cooling mode, 230V~
[VW1]DHW 3-way valve
[PC1] Heating circulation pump
[PC0] Primary circulation pump
Off
On
3
4
2
K1
K2
FE
M
PC0
M
PC1
M
PW2
PK2
EA1
JR1
BK GND
RD U5S
WH
M
PWM
PC0
PWM
MD1
T1
TC1
I1
TC0
T0
HMI bus
EMS bus
I4
Service Tools
BB tool
TC3
TR3
Buzzer
6
5
M
VW1
K3
1
0010035898-003
7
CAN-BUS
TW1
Technical information
35
Compress 3400i AWS – 6721852066 (2023/01)
The power supply cable of the Installer Module of the indoor unit has an
integrated fuse. In case of damage, the power supply cable [6] must be
replaced (see spare part list manual).
Max load for relay outputs PW2, PK2, VW1, PC1: 2A, cos φ > 0.4.
Maximum load for CUHP inst.: 6.3A
Note regarding input I1 (connection 13, 14) and I4 (connection 15,16).
The contact on the component or relay that is connected to this input
must be suitable for 5V and 1mA.
Note regarding [1]:
Coding switches A and P must not be adjusted! Otherwise malfunctions
and faults will occur.
Important: check the coding when a replacement part is used.
Note regarding [4]: to avoid reflection of messages in the CAN-BUS, the
CAN terminator switch should be switched on.
11.4.2 CAN & EMS BUS
Fig. 36 CAN and EMS connections
Continuous line = connection made at the factory
Dashed line = connection made during installation:
[A] Indoor unit
[B] Outdoor unit
[1] Control unit (user interface)
[2] Coding switch setting for A and P encoders (A=0, P=1)
[3] Installer module
[4] Room controller (accessories)
[5] EMS module (accessory)
[6] Connect-Key K 30 RF (accessory)
[7] Outdoor unit
[8] Outdoor unit terminals
_______________ Connected at factory/connected
during installation
_ __ ___ ___ __ Accessories
12
3
4
5
A
6
B
7
0010036950-001
8
Technical information
Compress 3400i AWS – 6721852066 (2023/01)
36
11.4.3 Wiring diagram for 5.85kW 230V~ electric booster heater, CS3400iAWS 4-10 OR-S 230V~
Fig. 37 Wiring diagram 5.85kW 230V~
[1] Distribution board
[2] Indoor unit 5.85kW, 230V~
[3] Outdoor unit 230V~
[PC1] Heating circulation pump
[T0] Flow temperature sensor
[T1] Outdoor temperature sensor
11.4.4 Wiring diagram for 5.85kW 3N ~ electric booster heater, CS3400iAWS 4-10 OR-S 230V~
Fig. 38 Wiring diagram 5.85kW 3N~
[1] Distribution board
[2] Indoor unit 5.85kW, 400V 3N~
[3] Outdoor unit 230V~
[PC1] Heating circulation pump
[T0] Flow temperature sensor
[T1] Outdoor temperature sensor
0010036829-003
0010036830-003
9
0-10V~230V~
4
9
8
Technical information
37
Compress 3400i AWS – 6721852066 (2023/01)
11.4.5 400V 3N~ indoor unit with 230V~ outdoor unit
Fig. 39 400V 3N~Indoor unit with 230V~ outdoor unit
[1] Indoor unit terminals
[2] EMS module (accessory)
[3] Overheating protection
[4] Electrical heater (3x1,95kW)
[5] Installer module power supply
[6] Pressure switch
[7] CAN bus line
[8] Outdoor unit
[9] Outdoor unit terminals
[10] 230V ~ power supply from the distribution board to the outdoor
unit
The output of the electric booster heater must be limited to a maximum
of 3.9kW with the configuration in parallel mode with the outdoor unit.
• Electric booster heater in compressor mode: 1.95-3.9kW (K3
blocked)
• Only electric booster heater, compressor off: 1.95-3.9-5.85kW
2
5
6
7
4
1
3
0010036907-004
9
LN
CAN
LCAN
H
CAN
GND
8
L
N
PE
10
Technical information
Compress 3400i AWS – 6721852066 (2023/01)
38
11.4.6 Connection alternative for EMS bus
Fig. 40 Connection alternative for EMS bus
[A] Star configuration and connection in series with external junction
box
[B] Star configuration
[C] Serial connection
[1] Installation circuit board
[2] Accessory modules (room temperature-dependent controller,
heating circuit module and solar module)
11.4.7 EVU/SG wiring diagram for the indoor unit with an
integrated electric booster heater
11.4.8 Photovoltaic
Since there are only two external inputs for the energy supplier and PV,
these cannot be used at the same time.
PV connection to external input 1 or 4.
The heat pump is able to process a control signal of a PV system.
B CA
111
222
222
222
222
Technical information
39
Compress 3400i AWS – 6721852066 (2023/01)
If the PV system has sufficient current for operating the heat pump, it can
communicate this information to the heat pump in the form of a start
command via a control cable. The control cable must be connected to
one of the available external connections. The selected external
connection must be configured in the control unit for the PV function.
The heating system must have a buffer cylinder and only heating circuits
with a mixer in order for a start command to be effective. A start
command causes the buffer cylinder to be charged up to the maximum
temperature achievable by the heat pump. However, it can only be
charged when the temperature in the buffer cylinder is below the
maximum temperature. Otherwise, the heat pump remains off.
11.5 Cable scheme
Table 14 Connections in indoor units AWS E
Table 15 Cable plan sensor
11.6 Measurements from temperature sensors
CAUTION
Physical injury or material damage due to incorrect temperature
If sensors with incorrect characteristics are used, the temperatures may
be too high or too low.
▶ Make sure that the temperature sensors used comply with the
specified values (see tables below).
Table 16 Sensor T0, TC0, TC1, TC3, TR3
Table 17 Sensor TW1
Designation Min. cross-
section
Type of cable Max. length Connected at: Connection
terminal:
Power source
3-way diverter valve VW1 3x1.5 mm² cable integrated Indoor unit 53 / 54 / N IDU
Heating circuit pump 1 PC1 3x1.5 mm² H05VV-F Indoor unit 52 / N / PE
DHW pump PW2 3x1.5 mm² H05VV-F 58 / N / PE
Signal cable IDU - ODU CAN-BUS 3x0.75 mm2LiYCY (TP) 30 m CAN High 31(H)
CAN Low 32(L),
GND 33
connection,
shielded cable
connected to
IDU
Power supply (single
phase)
IDU AWS E 3x6 mm² NYY Indoor unit L / N / PE 1xC32
Power supply (three
phase)
IDU AWS E 5x1.5 mm² NYY Indoor unit L1 / L2 / L3 / N /
PE
3xC10
Heating cable 3x1.5 mm² NYY 3 m Indoor unit 56 / N - (HC /
HC)
IDU - HC / HC
EMS - Module MM100,
MS100.
0.5 mm² J-Y (ST)Y 2x2x0,6 100 m Indoor unit 19 / 20
0-10V control boiler EM0 2x0.75 mm2LiYCY (TP) Indoor unit
(IDU AWS E)
38 / 39
PV-Function 0.4 mm² J-Y (ST)Y 2x2x0,6 From inverter on terminal I1 or I4 in IDU,
EVU-block or Smart Grid
Smart Grid 0.4 mm² J-Y (ST)Y 2x2x0,6 From load management controller on terminal I4,
connection 15, 16 in IDU
EVU-terminal block 3x1.5 mm² H05VV-F1)
1) EVU cable should be shielded
From load management controller on terminal I1,
connection 13, 14 in IDU
Sensor Designation Min. cross-
section
Type of cable Max.
length
Connected at: Connection
terminal:
Power source
Outdoor T1 0.5 mm2J-Y (ST)Y 2x2x 0,6 Indoor unit 3 / 4
Flow T0 0.5 mm2J-Y (ST)Y 2x2x 0,6 Indoor unit 1 / 2
Hot water (DHW) TW1 0.5 mm2J-Y (ST)Y 2x2x 0,6 Indoor unit 5 / 6
Dew sensor MK2 (max. 5x) 0.5 mm2cable integrated Indoor unit 34 / 35
Mixed heating circuit TC1 0.5 mm2J-Y (ST)Y 2x2x 0,6 100 m MM100 1 / 2
Pool temperature TC1 0.5 mm2J-Y (ST)Y 2x2x 0,6 100 m MP100 1 / 2
°C °C °C °C
20 12488 40 5331 60 2490 80 1256
25 10001 45 4327 65 2084 85 1070
30 8060 50 3605 70 1753 90 915
35 6536 55 2989 75 1480 - -
°C °C °C °C
20 14772 40 6653 60 3243 80 1704
25 11981 45 5523 65 2744 85 1464
30 9786 50 4608 70 2332 90 1262
35 8047 55 3856 75 1990 - -
°C °C °C
– 40 154300 5 11900 50 1696
– 35 111700 10 9330 55 1405
– 30 81700 15 7370 60 1170
– 25 60400 20 5870 65 980
– 20 45100 25 4700 70 824
System Commissioning Report
Compress 3400i AWS – 6721852066 (2023/01)
40
Table 18 Sensor T1
12 System Commissioning Report
– 15 33950 30 3790 75 696
– 10 25800 35 3070 80 590
– 5 19770 40 2510 85 503
0 15280 45 2055 90 430
°C °C °C
Commissioning date:
Customer address: Last name, first name:
Postal address:
Town:
Telephone:
Installation company: Last name, first name:
Street:
Town:
Telephone:
Product information: Product type:
TTNR:
Serial number:
FD-no.:
System components: Receipt/value
Room controller Yes | No
Room controller with humidity sensor Yes | No
Type:
Solar integration Yes | No
Buffer cylinder Yes | No
Type/Volume (l):
Hot water cylinder Yes | No
Type/Volume (l):
Other components Yes | No
Which?
Minimum clearances heat pump:
Is the heat pump standing on a solid, flat surface? Yes | No
Is the heat pump stably anchored? Yes | No
Is the heat pump standing in a location where snow cannot slide off the roof
onto it?
Yes | No
Minimum wall clearance? ...............mm
Minimum clearances at sides? ...............mm
Minimum distance to roof? ...............mm
Minimum distance in front of the heat pump? ...............mm
Condensate hose, heat pump
Does the condensate hose have a heating cable? Yes | No
Connections at the heat pump
Were the connections established correctly? Yes | No
Who installed/prepared the connecting pipework?
Minimum clearances, indoor unit:
Minimum wall clearance? ...............mm
Minimum distance in front of the unit? ...............mm
Heating:
Pressure determined in the expansion vessel? …….. bar
The heating system has been filled according to the pressure determined in the expansion vessel to ...... bar
Has the heating system been flushed before installation? Yes | No
Has the particle filter been cleaned? Yes | No
Electric connection:
Maintenance protocol, refrigerant (log book)
41
Compress 3400i AWS – 6721852066 (2023/01)
Table 19 System Commissioning Report
13 Maintenance protocol, refrigerant (log book)
In accordance with current EU legislation (the F-gas regulation, EC
Regulation No 817/2014 which came into effect on 1 January
2015),Operators of equipment that contains fluorinated greenhouse
gases in quantities of 5 tonnes of CO2 equivalent or more and not
contained in foams shall ensure that the equipment is checked for leaks.
EU Directive (EC) 517/2014 of 1.01.2015 prescribes tightness tests
and record keeping in the form of a log book for heat pumps with the
following criteria:
• Cooling circuit is not hermetically sealed.
• Refrigerant fill volume
▶ Copy maintenance protocol, refrigerant.
▶ Complete maintenance protocol, refrigerant.
▶ Read off appliance-specific data (e.g. serial number) at data plate of
heat pump
▶ File completed maintenance protocol for refrigerant in a folder (log
book)
Table 1 Maintenance protocol, heat pump information
Were the low voltage cables installed with a minimum distance of 100 mm
from 230 V/400 V cables?
Yes | No
Were the CAN-BUS connections established as specified in the instructions? Yes | No
Has a power guard been connected? Yes | No
Is the outside temperature sensor T1 on the coldest side of the house? Yes | No
Power supply:
Is the phase sequence of L1, L2, L3, N and PE in the outdoor unit correct? Yes | No
Is the phase sequence of L1, L2, L3, N and PE in the indoor unit correct? Yes | No
Does the power supply correspond to the installation instructions? Yes | No
Fuse for heat pump and electric booster heater, tripping characteristics?
Manual operation:
Was a function check of individual component groups performed (pump,
mixing valve, diverter valve, compressor, etc.)?
Yes | No
Comments:
Have the temperatures in the menu been checked and documented? Yes | No
T0
T1
TW1
TC0
TC1
________ °C
________ °C
________ °C
________ °C
________ °C
Settings for auxiliary heater:
Time delay, auxiliary heater
Block auxiliary heater Yes | No
Electric booster heater connected load settings
Auxiliary heater, maximum temperature ________ °C
Safety functions:
Block heat pump at low outside temperatures
Has the commissioning been performed correctly? Yes | No
Does the installer have to perform additional measures? Yes | No
Comments:
Installer signature:
Customer's signature:
Heat pump type: Serial number:
Part number: Appliance index:
Refrigerant / fill volume:
Maintenance carried out by:
Contractor:
Maintenance protocol, refrigerant (log book)
Compress 3400i AWS – 6721852066 (2023/01)
42
Table 1 Maintenance protocol, refrigerant (log book)
Table 1 Maintenance protocol, refrigerant (log book)
Table 1 Maintenance protocol, refrigerant (log book)
Table 1 Maintenance protocol, refrigerant (log book)
Table 1 Maintenance protocol, refrigerant (log book)
Refrigerant type: topped up?
Refrigerant charge: recovered?
Result of inspection:
Next inspection due on: Signature, stamp
Maintenance carried out by:
Contractor:
Refrigerant type: topped up?
Refrigerant charge: recovered?
Result of inspection:
Next inspection due on: Signature, stamp
Maintenance carried out by:
Contractor:
Refrigerant type: topped up?
Refrigerant charge: recovered?
Result of inspection:
Next inspection due on: Signature, stamp
Maintenance carried out by:
Contractor:
Refrigerant type: topped up?
Refrigerant charge: recovered?
Result of inspection:
Next inspection due on: Signature, stamp
Maintenance carried out by:
Contractor:
Refrigerant type: topped up?
Refrigerant charge: recovered?
Result of inspection:
Next inspection due on: Signature, stamp
Maintenance protocol, refrigerant (log book)
43
Compress 3400i AWS – 6721852066 (2023/01)
Table 1 Maintenance protocol, refrigerant (log book)
Table 1 Maintenance protocol, refrigerant (log book)
Table 1 Maintenance protocol, refrigerant (log book)
Maintenance carried out by:
Contractor:
Refrigerant type: topped up?
Refrigerant charge: recovered?
Result of inspection:
Next inspection due on: Signature, stamp
Maintenance carried out by:
Contractor:
Refrigerant type: topped up?
Refrigerant charge: recovered?
Result of inspection:
Next inspection due on: Signature, stamp
Maintenance carried out by:
Contractor:
Refrigerant type: topped up?
Refrigerant charge: recovered?
Result of inspection:
Next inspection due on: Signature, stamp
Bosch Thermotechnik GmbH
Junkersstrasse 20-24
73249 Wernau, Germany
www.bosch-thermotechnology.com
GB Importer:
Bosch Thermotechnology Ltd.
Cotswold Way, Warndon
Worcester WR4 9SW, United Kingdom
… 16 …

Hulp nodig? Stel uw vraag in het forum

Spelregels
1

Forum

Bosch-Compress-3400i-AWS

  • bosch compress hybrid 3400i AW geeft deze storing aan A11/3071 geen communicatie met afstandsbediening, neem contact op met uw installateur. Kan ik dit zelf oplossen of moet ik idd een installateur raadplegen? Gesteld op 2-12-2024 om 22:51

    Reageer op deze vraag Misbruik melden

Misbruik melden

Gebruikershandleiding.com neemt misbruik van zijn services uitermate serieus. U kunt hieronder aangeven waarom deze vraag ongepast is. Wij controleren de vraag en zonodig wordt deze verwijderd.

Product:

Bijvoorbeeld antisemitische inhoud, racistische inhoud, of materiaal dat gewelddadige fysieke handelingen tot gevolg kan hebben.

Bijvoorbeeld een creditcardnummer, een persoonlijk identificatienummer, of een geheim adres. E-mailadressen en volledige namen worden niet als privégegevens beschouwd.

Spelregels forum

Om tot zinvolle vragen te komen hanteren wij de volgende spelregels:

Belangrijk! Als er een antwoord wordt gegeven op uw vraag, dan is het voor de gever van het antwoord nuttig om te weten als u er wel (of niet) mee geholpen bent! Wij vragen u dus ook te reageren op een antwoord.

Belangrijk! Antwoorden worden ook per e-mail naar abonnees gestuurd. Laat uw emailadres achter op deze site, zodat u op de hoogte blijft. U krijgt dan ook andere vragen en antwoorden te zien.

Abonneren

Abonneer u voor het ontvangen van emails voor uw Bosch Compress 3400i AWS bij:


U ontvangt een email met instructies om u voor één of beide opties in te schrijven.


Ontvang uw handleiding per email

Vul uw emailadres in en ontvang de handleiding van Bosch Compress 3400i AWS in de taal/talen: Engels als bijlage per email.

De handleiding is 7.89 mb groot.

 

U ontvangt de handleiding per email binnen enkele minuten. Als u geen email heeft ontvangen, dan heeft u waarschijnlijk een verkeerd emailadres ingevuld of is uw mailbox te vol. Daarnaast kan het zijn dat uw internetprovider een maximum heeft aan de grootte per email. Omdat hier een handleiding wordt meegestuurd, kan het voorkomen dat de email groter is dan toegestaan bij uw provider.

Stel vragen via chat aan uw handleiding

Stel uw vraag over deze PDF

Andere handleiding(en) van Bosch Compress 3400i AWS

Bosch Compress 3400i AWS Gebruiksaanwijzing - English - 2 pagina's


Uw handleiding is per email verstuurd. Controleer uw email

Als u niet binnen een kwartier uw email met handleiding ontvangen heeft, kan het zijn dat u een verkeerd emailadres heeft ingevuld of dat uw emailprovider een maximum grootte per email heeft ingesteld die kleiner is dan de grootte van de handleiding.

Er is een email naar u verstuurd om uw inschrijving definitief te maken.

Controleer uw email en volg de aanwijzingen op om uw inschrijving definitief te maken

U heeft geen emailadres opgegeven

Als u de handleiding per email wilt ontvangen, vul dan een geldig emailadres in.

Uw vraag is op deze pagina toegevoegd

Wilt u een email ontvangen bij een antwoord en/of nieuwe vragen? Vul dan hier uw emailadres in.



Info